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Single nucleotide polymorphisms, or SNPs, are differences between two sequences of DNA at one individual nucleotide location.

This tag is for questions relating to SNPs (single nucleotide polymorphisms), which are individual nucleotide differences between two sequences, which may be found comparing paired chromosomes within a species, or sequences between species.

The following two sequences contain an example SNP, in bold:

A C G T G T G C C A ...
A C G T C T G C C A ...

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